【摘要】 依据一类清查的标准木、样木和样地数据,构建主要树种(组)树高曲线,编制立地形表,用地形和土壤因子拟合立地形估测模型。以此,基于吉林省二类调查数据库,估测全省小班立地形,得到立地质量等级及分布。同时根据全省现实林分状况,综合确定各立地质量等级林地的生产潜力,由此对比分析现实与潜在生产力。结果表明:1)基于清查资料构建的立地形估测模型,经检验,均达到显著相关水平,可用于立地质量的评价;2)吉林省林地质量较好,林地质量等级为好和中等的分别占31.03%和66.00%,合计高达97.03%;3)全省现实生产力为潜在生产力的56.65%,仅7.20%的森林达到林地生产潜力水平,森林生产力仍有较大可提高性;4)基于一类清查和二类调查数据库的立地质量评价和生产潜力测算的方法可靠,具有可推广性。更多还原

【Abstract】 Based on Continuous Forest Inventory Data(standard trees, sample trees and plot data), the tree height curves of main tree species were established, the site form tables were compiled, and site form models were fitted with landform and soil factors. Based on the forest management inventory database of Jilin province, the site form of sub-compartment in Jilin province was estimated,and the quality grade and distribution of the stand site were obtained. At the same time, according to the actual stand status of the whole province, the production potential of forest land of each stand site quality grade was determined comprehensively. From this,comparative analyses of reality productivity and potential productivity were conducted. The results show that: 1) The site form estimation model of sub-compartment based on inventory data has been verified to be significantly correlated level and can be used for the evaluation of the stand site quality; 2) The forest quality of Jilin Province was good, the forest quality grade of good and medium accounted for 31.03% and 66.00% respectively, totally reached 97.03%; 3) The actual productivity of the whole province was 56.65%of the potential productivity, and only 7.20% of the forest reached the potential level of forest production, so there is still a relatively high increase in forest productivity; 4) The methods of site quality evaluation and production potential measurement based on the data of continuous forest inventory and forest management inventory survey is reliable and can be popularized.更多还原